/*
 * Copyright 2015 泛泛o0之辈
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.jfast.framework.jdbc.log;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.Connection;


public class ConnectionLogger implements InvocationHandler{

	private String sql = "";
    private Connection conn;
	private String targetMethod;
	private boolean noLog = false;
    
    public ConnectionLogger(Connection conn){
    	this.conn = conn;
    }

	public Object invoke(Object proxy, Method method, Object[] args)
			throws Throwable {
		try {
			if (method.getName().equals("prepareStatement")) {
				sql = String.valueOf(args[0]).replaceAll("\\?", "%s");
				return PreparedStatement.getPreparedStatement((java.sql.PreparedStatement) method.invoke(conn, args),sql,targetMethod,noLog);
			} else if (method.getName().equals("setCatalog")){
				targetMethod = String.valueOf(args[0]);
				return null;
			} else if (method.getName().equals("setReadOnly")){
				noLog = (Boolean)args[0];
			}
			return method.invoke(conn, args);
		} catch (InvocationTargetException e) {
			throw e.getTargetException();
		}
	}

}
